T-Lymphocytes, CytotoxicReceptor, Serotonin, 5-HT2AReceptor, Serotonin, 5-HT1AReceptors, Serotonin, 5-HT1Receptors, Serotonin, 5-HT3Receptor, Serotonin, 5-HT1BReceptor, Serotonin, 5-HT2CSerotonin 5-HT2 Receptor AntagonistsSerotonin 5-HT1 Receptor AgonistsHT29 CellsCytotoxicity, ImmunologicSerotonin 5-HT2 Receptor AgonistsReceptors, SerotoninReceptor, Serotonin, 5-HT1DSerotonin AntagonistsPore Forming Cytotoxic ProteinsSerotoninSerotonin 5-HT3 Receptor AntagonistsSerotonin 5-HT1 Receptor AntagonistsSerotonin Receptor AgonistsCytotoxinsCytotoxicity Tests, ImmunologicSerotonin 5-HT3 Receptor AgonistsSerotonin 5-HT4 Receptor AgonistsCell SurvivalSerotonin 5-HT4 Receptor AntagonistsAntineoplastic AgentsDrug Screening Assays, Antitumor8-Hydroxy-2-(di-n-propylamino)tetralinCell Line, TumorGranzymesKetanserinPerforinTumor Cells, CulturedCell LineKiller Cells, NaturalDose-Response Relationship, DrugLymphocyte ActivationApoptosisMice, Inbred BALB CCD8-Positive T-LymphocytesMice, Inbred C57BLCells, CulturedT-LymphocytesHLA-A2 AntigenInhibitory Concentration 50H-2 AntigensClone CellsEpitopesSpleenFlow CytometryEpitopes, T-LymphocyteImmunity, CellularSerotonin AgentsHLA-A AntigensAntineoplastic Agents, PhytogenicMolecular Sequence DataAntibodies, MonoclonalAntigens, CD8Interferon-gammaRaphe NucleiMice, Inbred StrainsCell DeathAmino Acid SequenceDrug SynergismHistocompatibility Antigens Class IAntigens, NeoplasmTime FactorsPiperazinesNeoplasms, ExperimentalPlant ExtractsRitanserinMembrane GlycoproteinsInterleukin-2IndolesSumatriptanAmphetaminesBacterial ToxinsLymphocytesImmunotoxinsNeoplasmsCell DivisionImmunotherapyMolecular StructureCell ProliferationCTLA-4 AntigenMethiothepinAntigens, CDDoxorubicinCD4-Positive T-LymphocytesAntibody-Dependent Cell CytotoxicityAntibiotics, AntineoplasticIsoantigensAntigens, ViralChromium RadioisotopesLymphocyte Culture Test, MixedMethysergideAntigen PresentationMelanomaRecombinant Proteins